but the russians insisted no pictures could be taken show low them discussing assad critics want the administration to >> reporter: the u.s. critics want the administration to consider military options. >> we do know absolutely that these weapons have been readied for use by bashar al-assad's aircraft. again, i urge, we urge the president of the united states to make whatever military preparations are necessary. >> reporter: another military imperative, securing the weapons if assad loses control. >> it is absolutely important that terrorist groups not obtain possession of those weapons, and then try to use them against any other country or any other group within syria. >> reporter: there are military operations, but privately, the u.s. military officials concede that the pre-emptive strike could be risky and could even spread the deadly sarin gas, if he were to launch the weapons, an attack could be likely against him and his officials. >> andrea mitchell, thank you, here we go in egypt, where the new president who replaced the old president, hosni mubarak, after he was deposed, tri